OMX_IndexConfigBrcmVideoRequestIFrame or OMX_IndexConfigVideoIntraVOPRefresh (they're synonymous).
See the documentation provided at https://github.com/raspberrypi/firmware ... ncode.html
, or the HTML rendered version (although slightly out of date) at http://www.jvcref.com/files/PI/document ... uestIFrame
(I am trying to get a copy in the raspberrypi.org documentation too, but apparently the website systems don't allow it easily).
Software Engineer at Raspberry Pi Trading. Views expressed are still personal views.
I'm not interested in doing contracts for bespoke functionality - please don't ask.